FYI, another item on my todo list is porting the RF24 library to plan9-bcm. i use nrf24l01+ devices between arduinos and a pi (in Go on linux) for temp/humidity telemetry. the device uses the SPI interface. on a somewhat related note, is anyone building support for Go on Plan 9/ARM? On Fri, May 9, 2014 at 7:11 AM, Krystian Lewandowski wrote: > I was working on GPIO under Plan9 - very simple thing but also supports > edge-raising/falling events. I had simple C code to print what pin > triggered an event. I'll try to push this simple test to github during > weekend. Though i'm not sure how it can be integrated - is events counting > enough? > > Krystian > https://github.com/elewarr/plan9-bcm > > 2014-05-08 20:36 GMT+02:00 Bakul Shah : > > On Thu, 08 May 2014 18:58:31 BST "Steve Simon" wrote: >> > I have a hifiberry (http://www.hifiberry.com/) nicely minimalist, >> > though no driver at present - I will await the GSOC project :-) >> >> > I have some itron VFDs from work, 256 x 64 pixel. I like these as >> > the visibility is excellent. The only annoyance is they have >> > a parallel interface and I use up all the PI's GPIOs. >> >> > I also need to interface a rotary encoder for the tuning knob which >> > is also a pain - not complex enough to justify an FPGA, but a bit too >> > much to poll when the PI is doing audio decode as well. >> >> No need for polling. The BCM2835 can handle edge triggered >> interrupts. Or you can use a PAL or CPLD. >> >> > Thinking of adding a PIC or an AVR just for the encoder / VFD interface >> > and talking i2c to it. >> >> >